Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 82, Subpt. G, App. K Appendix K to Subpart G of Part 82—Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule Effective August 21, 2002

Replacements for HCFC-141b in the following rigid polyurethane/polyisocyanurate applications:

HCFC-22, HCFC-142b and blends thereof

Unacceptable Closed cell foam products and products containing closed cell foams manufactured with these substitutes on or before December 1, 2017 may be used after that date

Alternatives exist with lower or zero-ODP.

—Boardstock

—Appliance

—Spray

All foam end-uses

HCFC-124

Unacceptable Closed cell foam products and products containing closed cell foams manufactured with this substitute on or before December 1, 2017 may be used after that date

Alternatives exist with lower or zero-ODP.